Light field image encryption method based on DNA sequence and chaotic system

A technology of DNA sequence and light field image, which is applied in the field of light field image encryption based on DNA sequence and chaotic system, can solve the problem of less involvement in the basic feature analysis of light field image, and achieve the effect of fast operation speed

Pending Publication Date: 2019-08-20
JIANGXI UNIVERSITY OF FINANCE AND ECONOMICS
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  • Claims
  • Application Information

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Problems solved by technology

Most of these methods for encrypting light field images are based on the improvement of traditional algorithms, and less involved in the basic feature analysis of light field images.

Method used

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  • Light field image encryption method based on DNA sequence and chaotic system
  • Light field image encryption method based on DNA sequence and chaotic system
  • Light field image encryption method based on DNA sequence and chaotic system

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Embodiment 1

[0045] Embodiment 1: The light field image method based on the DNA sequence and the chaotic system mentioned in the present invention first uses the dimensional characteristics of the light field image to construct a two-dimensional representation image. The specific method is that a class of light field image scenes has multiple sub-view images, which can be expressed as: v is the number of all view maps of a scene, L k is a perspective image. According to the angle domain information, it is composed of multi-view views of the light field image, and the images of different view angles are processed. At the same time, given the initial value x in the logical map 0 and parameter μ thus yields a random matrix φ(x). A one-dimensional logical map is expressed as: x n =μx n-1 (1-x n-1 ), the random sequence U can be obtained i , initial value x 0 Based on the nature of the plaintext image, it is defined as: In order to enhance the sensitivity of the plaintext image, bett...

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Abstract

The invention relates to a light field image encryption method based on a DNA sequence and a chaotic system. The light field image encryption method is characterized by comprising the following steps:firstly, carrying out two-dimensional spatial domain and angular domain representation on a four-dimensional light field image; carrying out block processing on the sub-view light field image and a random matrix generated by logic mapping; carrying out DNA coding mode selection and operation on the generated sub-blocks by utilizing the characteristics of a chaotic system; and finally, carrying out DNA decoding processing to obtain a ciphertext image of a sub-visual angle, carrying out sequential processing and angular domain removal, and carrying out Arnold transformation to obtain a final light field ciphertext image. The four-dimensional light field image can be effectively protected, and the method has the advantages of being safe, reliable and high in operation speed.

Description

technical field [0001] The invention relates to the technical field of digital image and digital video processing, in particular to a light field image encryption method based on a DNA sequence and a chaotic system. Background technique [0002] With the rapid development of multimedia and network technology, image is a typical carrier of data, and its information security has been widely concerned. Digital image encryption technology can effectively solve the problem of image security. Digital image encryption is a new application of computer cryptography in the field of image data information protection, involving image processing, cryptography and other technologies. Compared with natural images, the sampling information of 3D object scenes becomes more and more abundant and real, and the representative one is light field images. Light field has extensive research value in computer graphics. Camera imaging technology has developed rapidly in recent years. Compared with ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T9/00
CPCG06T9/001
Inventor 温文媖魏康康方玉明张玉书杨勇
Owner JIANGXI UNIVERSITY OF FINANCE AND ECONOMICS
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